I'm gonna guess this incident and Rolando McClain's retirement will become further evidence of CTE in football players.
Chiefs 2016 Opponents:
Home: JAX, TEN, NO, TB, NYJ. Away: HOU, IND, ATL, CAR, PIT
Chiefs 2017 Opponents:
Home: BUF, MIA, PHI, WSH, AFC North. Away: NE, NYJ, NYG, DAL, AFC South